Description
Paxilline is a neuroactive mycotoxin initially produced by species of Penicillum and Aspergillus. In vitro and in vivo, paxilline inhibits Ca2+/voltage-sensitive K+ (BK) channels. Paxilline also competitively inhibits sarco/endoplasmic reticulum Ca2+ ATPase (SERCA), preventing Ca2+ release and phosphoenzyme formation.
References
Borchert GH, Hlaváčková M, Kolář F. Pharmacological activation of mitochondrial BK(Ca) channels protects isolated cardiomyocytes against simulated reperfusion-induced injury. Exp Biol Med (Maywood). 2013 Feb;238(2):233-41. PMID: 23576804.
Bilmen JG, Wootton LL, Michelangeli F. The mechanism of inhibition of the sarco/endoplasmic reticulum Ca2+ ATPase by paxilline. Arch Biochem Biophys. 2002 Oct 1;406(1):55-64. PMID: 12234490.